单词 | candela |
释义 | candela[ kan-dee-luh ] / kænˈdi lə / noun Optics.a basic unit of luminous intensity in the International System of Units (SI), formally defined as the luminous intensity of a source that emits monochromatic radiation of frequency 540 × 1012 hertz and that has a radiant intensity of 1/683 watt/steradian: adopted in 1979 as the international standard of luminous intensity. Abbreviation: Cd Origin of candela1945–50; <Latin: candle Words nearby candelacancroid, cancrum, Cancún, Candace, c & b, candela, candelabra, candelabrum, candelilla, candent, candesartan cilexetil Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for candela
British Dictionary definitions for candela (1 of 2)candela / (kænˈdiːlə, -ˈdeɪlə) / nounthe basic SI unit of luminous intensity; the luminous intensity in a given direction of a source that emits monochromatic radiation of frequency 540 × 10 12 hertz and that has a radiant intensity in that direction of (1/683) watt per steradianSymbol: cd Also called: candle, standard candle Word Origin for candelaC20: from Latin: candle British Dictionary definitions for candela (2 of 2)Candela / (kænˈdiːlə) / nounFelix. 1910–97, Mexican architect, noted for his naturalistic modern style and thin prestressed concrete roofs Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for candelacandela [ kăn-dĕl′ə ] n.A unit of measurement of luminous flux, equal to the amount of light given out through a solid angle by a source of one candela radiating equally in all directions.candle The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for candelacandela [ kăn-dĕl′ə ] The SI unit used to measure the brightness of a source of light (its luminous intensity). By definition, one square centimeter of a blackbody at the freezing point of platinum emits one-sixtieth of a candela of radiation. See Table at measurement. See also lumen luminous flux. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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